From 9d31c179b198c8b7742715d09594e4055c19b8a7 Mon Sep 17 00:00:00 2001
From: Thijs Louisse <Thijs.Louisse@ing.com>
Date: Tue, 6 Dec 2022 10:30:55 +0100
Subject: [PATCH] chore: improve SlotMixin feedback

---
 packages/ui/components/core/src/SlotMixin.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/packages/ui/components/core/src/SlotMixin.js b/packages/ui/components/core/src/SlotMixin.js
index 6f58ede66..a83cceb17 100644
--- a/packages/ui/components/core/src/SlotMixin.js
+++ b/packages/ui/components/core/src/SlotMixin.js
@@ -196,7 +196,8 @@ const SlotMixinImplementation = superclass =>
           this.__slotsThatNeedRerender.add(slotName);
         } else {
           throw new Error(
-            'Please provide a function inside "get slots()" returning TemplateResult | Node | {template:TemplateResult, afterRender?:function} | undefined',
+            `Slot "${slotName}" configured inside "get slots()" (in prototype) of ${this.constructor.name} may return these types: TemplateResult | Node | {template:TemplateResult, afterRender?:function} | undefined.
+            You provided: ${slotFunctionResult}`,
           );
         }
       }